Held at the Metropolitan Museum of Art in New York City all eyes were on Sienna Miller, who looked every inch the yummy mummy in her white open-backed Burberry dress and studded cropped biker jacket.
Singer Rita Ora arrives at the Metropolitan Museum of Art Costume Institute Benefit celebrating the opening of "PUNK: Chas to Couture" in New York.
Singer and actress Miley Cyrus arrives at the Metropolitan Museum of Art Costume Institute Benefit celebrating the opening of "PUNK: Chaos to Couture" in New York.
Model Gisele Bundchen arrives at the Metropolitan Museum of Art Costume Institute Benefit celebrating the opening of "PUNK: Chaos to Couture" in New York.
Actress Sarah Jessica Parker arrives at the Metropolitan Museum of Art Costume Institute Benefit celebrating the opening of "PUNK: Chaos to Couture" in New York.
Actress Emilia Clarke arrives at the Metropolitan Museum of Art Costume Institute Benefit celebrating the opening of "PUNK: Chaos to Couture" in New York.
Singer Beyonce arrives at the Metropolitan Museum of Art Costume Institute Benefit celebrating the opening of "PUNK: Chaos to Couture" in New York.
Actress Christina Ricci arrives at the Metropolitan Museum of Art Costume Institute Benefit celebrating the opening of "PUNK: Chaos to Couture" in New York.
Actress Kate Bosworth arrives at the Metropolitan Museum of Art Costume Institute Benefit celebrating the opening of "PUNK: Chaos to Couture" in New York.